Soldering solution



Patented Sept. 9, 1930 VITA HABIF, OF DETROIT, MICHIGAN SOLDERINGSOLUTION No Drawing. continuation of application Serial No. 439,534,filed March 27, 1930. This application filed June 9, 1930. Serial No.460,096.

This invention relates to solutions such as are commonly employed insoldering operations, and is a continuation of my application forLetters Patent of the United States,

-filed March 27th, 1930, Serial Number The objects of the presentinvention are to provide a soldering solution that Will not, during asoldering operation, give ofl gases detrimental to the health of theWorkman conducting the operation, that is free of acids such .as arecommonly employed in connection with conventional soldering solutionsthat is free of corrosive elements tending to impregnate the metalduring the soldering operation, or injure the hands of the Workmen usingthe solution, that is highly fluid; and that is simple to prepare,economical to produce, and efiicient in operation.

' Other objects will be specifically pointed out or will be apparentjnthe following specification.

In the conventional types of soldering solutions, paste or the like nowfound on the market, an acid is included as an essential element. Whenthis acid is heated during the soldering operation fumes are given offfrom the same which are often drawn into the lungs of he workmenconducting the operation and oftencauses physical disablement of theworkman. This danger has long been recognized and various means havebeen attempted in order to eliminate the deleterious 'Furthermore, inemploying such acid in the soldering solution, theacid attacks thebeensoldered has been put into use the acid slowly works out of thepores and attacks the surface ofthe metal, withthe'result that suchsurface becomes corroded or oxidized and notonly presents an unsightlyappearance, but the strength of the soldered joint is materiallyimpaired. Furthermore, such.

solutions attackand injure the hands of the workmen usingv the same.

The present invention has been designed primarily to obviate thedisadvantages above a cleaning agent which will dissolve grease andwhich may also serve as a thinner, an adhesion agent, and preferably anagent for dissolving the above mentioned agent and which may serve todilute the solution. The fluxing agent I employ is chloride of zinc. Themetal cleaningand grease dissolving agent is preferably one of thealcohols, preferably denatured alcohol because of its relative cheapnessand because this material will mix readily With Water When the latter isemployed for dissolving the other agents, and also because it ma beemployed as a thinner if desired. In a dition, alcohol is preferablyemployed because it eliminates any corrosion that might otherwise occurby the use of the fluxing agent. The adhesive agent may be glycerine,molasses or any other syrupy material Which will act to cause thesolution to adhere. to the a materialwhich will not injuriously afiect.either the metal or the hands of the workman employed in the solderingoperation. The dissolving agent is preferably water because of itsrelative cheapness. These materials are mixedtogether in suitableproportions to form a mixture of relative fluidity which will readilyand quickly spread over the surface to be soldered, it preferably havinga Baumreading of about 22,altho in some cases it may vary between 14 and50.

These various elments may be mixed together in a number of differentproportions which may depend, to a great extent upon theparticularmaterial being soldered and the conditions under which thesoldering operamixed together in the following proportions by volume.

Chloride of zinc 10 to 50% Glycerine a trace to 50% Alcohol -1 5 to 50%Water 0 to 50% A mixture that I have found satisfactory is as follows:

Per cent- Chloride of zinc 38 Glycerine 2 Alcohol 20 Water 40 The abovesolution is employed in the soldering operation in the same manner asconventional soldering solutions and it will be apparent that because ofits composition no acid fumes will be given off, and that there is noacid to penetrate the pores of the metal and later work out through thesurface to cause corrosion of the same, or to affect the handsofworkmen. The only fumes that will be given off from this solution willbe the fumes of the alcohol and the glycerine which in the quantitiesthat will be present are entirely harmless to the health of those whomay happen to breathe a small amount of the same into their lungs.

A feature of the solution is the ability to be diluted with Waterwithout causing a separation of the various constituents, this beingnormally impossible with most solutions because of such separation.

It may also be desirable to add a small amount of coloring matter to thesolution so as to make it more easily identified, a color such as purplehaving been found satisfactory for this purpose.

Formal changes may be made in the specific embodiment of the inventiondescribed without departing from the spirit or substance of the broadinvention, the scope of which is commensurate with the appended claims.

What I claim is:

1. A soldering solution comprising 10% to 50% of chloride of zinc, of 1%to 50% of glycerine, 5% 'to 50% of alcohol, and 1% to 50% of water.

2. A soldering solution comprising approximately 38% chloride of zinc,2% glycerine, 20% alcohol, and 40% water.

3'. A soldering solution comprising 10% to 50% zinc chloride, 5% to 50%alcohol, of 1% to 50% of an adhesive soluble in water, and 1% to 50%water.

- 4. A homogenous non-separating soldering solution, comprising, 30% to50% of zinc chloride, a trace to 20% of glycerine, 10% to 30% ofalcohol, and 30% to 40% of water.

alcohol. v

VITA HABIF.

